Portion of a vacuum cleaner



FIG. 1 is a perspective view of a portion of vacuum cleaner whichembodies our design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof,

FIG. 5 is a right side view thereof; and,

FIG. 6 is a top plan view thereof.

The bottom view is unomamented.

The details shown in broken lines form no part of the claimed design.

The ornamental design for a portion of vacuum cleaner, as shown anddescribed.